Smoking-pipe.



W. o. CAMPBELL.

SMOKING PIPE.

APPLIOATION FILED JAN 6, 1908.

900,482. I Patented oct. e, 1908.

* ATTORNEY.

WILLIAM 0. CAMPBELL, OF ST. LOUIS, MISSOURI.

SMOKING-PIPE'.

To all whom it may concern:

Be it known that I, WILLIAM O, CAMPBELL, citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new'anduseful Improvements in Smoking-Pipes', of which the following is a full,clear, andV exact description, reference being had to the accompanyingdrawings, forming a part hereof.

My invention has relation to improvements in smoking-pipes andlitconsists in the novel construction of pipe more fully set forth in thespecificationand pointed out in the claim.

any time for purposes of cleaning. This plug In the drawings, Figure 1is aside elevation of my pipe with parts broken away; and

lFig. 2 1s a perspective of a portion of the plug conned within thestem. Y

The obj ect` of my invention is to'consti'u'ct a smoking pipe whichprovides means for compelling the smoke to travel in a s iral orequivalent path on its wa the mouth-piece, the total7 length of such apath being 'far in excess of the length of the stein and mouth-piececombined, so that when the smoke passes out of the moutlipiece into themouth of the smoker, it will iave become sufficiently cooled by reasonof such increased length oftravel, as not `to burn the tongue or otherportionsv of the smoker-s mouth. i

The advantages of the construction lwill be better apparent from adetailed description of the invention which is as follows:

Referring to the drawings, B, represents a conventionalpipe-bowl,-S,.the stem, M, the mouth-piece, and F, a metal ferruiecarrying the mouth-piece, the ferrule itself being passed over theadjacent end of the stem.

The' parts described are well understood anddo not in themselvesconstitute any part of my present invention. u

Ada ted to be inserted into the sten'i S, and exten ing preferabl .theentire length of thc same, is a plugP, w iich may be removed atSpecification of Letters Patent. Application led January 6, 1908. SerialNo. 409,472.

from the owl to Patented' oct. e, 190e.

is provided with a spiral peri a; and l"nce the outer wall of t e plugsnugly ts the inner wall of the stem, the groove a thereby fornis aspiralpassage-way the total length of which materially exceeds thelength of the stem. In this way, the smoke from the bowl by reason ofits increased distance `of tiavel is materially cooled by the time itenters the passage-way of the mouthpiece, and the burning effect sousually experienced in smoking a pi e disappears. The end of the plug ad'acent t e inner hollow nipple n of the mout -piece is beveled as shownat b, the edge 'of the be'vel passing between the tapering walls of thenipple and the stein S, this arrangement permitting an unobstructedassage of the smoke into the mouthpiece. Vllhile the extended path forthe smoke is preferably a spiral one as shown, any other elongated athmay be substituted therefor, valthough' t e spiral form is preferable,permitting yas it does, the ready cleaning ofthe arts.

Having `described my invention, what I claim is:

A smokingipe comprising a bowl, an open-ended ho ow stem carried by thesame,

heral grooveA a mouth-piece at the outer end ot' the stem, a

nip le formed at the inner end ofthe passage of t e mouth-piece andhaving inner tapering walls, a plug within the stem and engaging theinner walls of the. stem, the said plug having a peripheral spiralformation forming a oircuitous passage for the smoke, the end of theplug adjacent the ni ple beveling sufficiently to pass between t ietapering walls oi' the nipple and stem, andpermit the smoke dischargedfrom the passage to enter the nip ple and the passage of themouth-piece, su stantially as set forth.

In testimony in presence of two witnesses.

WILLIAM 0. CAMPBELL. Witnesses: p

EMIL' STAREK,

Jos. A. MICHEL. u

